Jason Pierre-Paul -- FINGER AMPUTATED ... After Fireworks Injury

NY Giants superstar Jason Pierre-Paul had a finger amputated moments ago ... following injuries suffered during a 4th of July fireworks accident.

Pierre-Paul has been hospitalized since injuring his hand in a fireworks show at a home in Florida ... and now ESPN's Adam Schefter says he's obtained medical records that show doctors removed his right index finger.

JPP's status has been shrouded in mystery ever since the incident -- and we're assuming JPP's wants it that way since there's a LOT of money on the line in terms of a new contract.

But with news that he's lost a finger -- it seems his NFL is still in jeopardy. Still, Schefter says his sources tell him Jason expects to play this season.